Millions of meniscus arthroscopies are performed every year, but for degenerative tears trials have shown no advantage over exercise therapy. When surgery can be avoided and when it is needed.
Types of meniscus tears
- Degenerative — age-related, usually after 40; often found on MRI in people without pain.
- Traumatic tears in the “red zone” (with blood supply) — in young people they are repaired whenever possible.
- Bucket-handle tears — often lock the knee and need surgery.
- Complex tears in the “white zone” — without blood supply, they hardly heal on their own.
Treatment without surgery
For a degenerative tear, the basis is an 8–12-week exercise programme and load adjustment. In the FIDELITY trial (NEJM 2013), Kise et al. (BMJ 2016) and ESCAPE (2022), exercise therapy gave results comparable to arthroscopy. Injections — corticosteroid, hyaluronic acid, PRP — may reduce pain and swelling, especially with coexisting osteoarthritis; there is no evidence that they restore the meniscus.
When surgery is still needed
- the knee is locked and does not straighten fully;
- a bucket-handle tear with mechanical symptoms;
- knee instability combined with an ACL rupture;
- a fresh traumatic tear in a young patient — repair is better than removal.
Outlook
In most patients with a degenerative tear, pain decreases within 2–3 months of exercise. If there is no improvement, the physician reviews the diagnosis — often the source of pain is osteoarthritis rather than the meniscus. More on the meniscus tear page.

